<?php

namespace Aws\Arn\S3;

use Aws\Arn\Arn;
use Aws\Arn\Exception\InvalidArnException;
use Aws\Arn\ResourceTypeAndIdTrait;

/**
 * This class represents an S3 Outposts bucket ARN, which is in the
 * following format:
 *
 * @internal
 */
class OutpostsBucketArn extends Arn implements
	BucketArnInterface,
	OutpostsArnInterface {
	use ResourceTypeAndIdTrait;

	/**
	 * Parses a string into an associative array of components that represent
	 * a OutpostsBucketArn
	 *
	 * @param $string
	 * @return array
	 */
	public static function parse($string) {
		$data = parent::parse($string);
		$data = self::parseResourceTypeAndId($data);
		return self::parseOutpostData($data);
	}

	public function getBucketName() {
		return $this->data['bucket_name'];
	}

	public function getOutpostId() {
		return $this->data['outpost_id'];
	}

	private static function parseOutpostData(array $data) {
		$resourceData = preg_split("/[\/:]/", $data['resource_id'], 3);

		$data['outpost_id'] = isset($resourceData[0])
			? $resourceData[0]
			: null;
		$data['bucket_label'] = isset($resourceData[1])
			? $resourceData[1]
			: null;
		$data['bucket_name'] = isset($resourceData[2])
			? $resourceData[2]
			: null;

		return $data;
	}

	/**
	 *
	 * @param array $data
	 */
	public static function validate(array $data) {
		Arn::validate($data);

		if(($data['service'] !== 's3-outposts')) {
			throw new InvalidArnException("The 3rd component of an S3 Outposts"
				." bucket ARN represents the service and must be 's3-outposts'.");
		}

		self::validateRegion($data, 'S3 Outposts bucket ARN');
		self::validateAccountId($data, 'S3 Outposts bucket ARN');

		if(($data['resource_type'] !== 'outpost')) {
			throw new InvalidArnException("The 6th component of an S3 Outposts"
				." bucket ARN represents the resource type and must be"
				." 'outpost'.");
		}

		if(!self::isValidHostLabel($data['outpost_id'])) {
			throw new InvalidArnException("The 7th component of an S3 Outposts"
				." bucket ARN is required, represents the outpost ID, and"
				." must be a valid host label.");
		}

		if($data['bucket_label'] !== 'bucket') {
			throw new InvalidArnException("The 8th component of an S3 Outposts"
				." bucket ARN must be 'bucket'");
		}

		if(empty($data['bucket_name'])) {
			throw new InvalidArnException("The 9th component of an S3 Outposts"
				." bucket ARN represents the bucket name and must not be empty.");
		}
	}
}
